PCA9536DRG4

I/o Expanders Overview

The PCA9536DRG4 is a remote 4-bit I2C and SMBus I/O expander manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 5.5 V and supports clock frequencies up to 400 kHz. The device features configuration registers for input/output direction control and provides ESD protection rated at 2 kV. It is housed in an SOIC-8 surface-mount package and functions reliably across an operating temperature range from -40°C to +85°C.

I/o Expanders Feature Summary

• Supports I2C and SMBus serial communication protocols for system integration
• Includes configuration registers to define individual pin directions
• Provides electrostatic discharge protection for signal integrity

I/o Expanders Applications

• Portable devices requiring additional GPIO pins
• Industrial systems utilizing SMBus interfaces
• Embedded controllers needing remote I/O expansion

I/o Expanders Procurement Notes

Verify the specific ordering suffix DRG4 to confirm the tape-and-reel packaging format and ensure compliance with RoHS standards. Confirm that the SOIC-8 footprint matches the target PCB layout requirements before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component when a low-pin-count I/O expander is required for I2C or SMBus networks. Ensure the design accommodates the 2.3 V to 5.5 V supply range and that the 400 kHz bus speed meets the system timing constraints.

I/o Expanders Part Context

This part belongs to the PCA9536 series of I/O expanders. It serves as a direct replacement for the obsolete PCA9536D, maintaining functional compatibility while offering updated manufacturing processes and packaging options suitable for modern surface-mount assembly lines.

I/o Expanders Replacement Considerations

The NXP PCA9536D,118 is documented as a direct substitute. Verify pinout and electrical specifications against the original design requirements before implementing any cross-manufacturer substitution.